DoubleDown is opening up its metrics on social casino games, a bit. Today, it will disseminate a “social casino index” based on the game play data of six million monthly active users, showing where and how people play its games.

For the most part, the report is just a science-y way of flaunting DoubleDown’s reach (and the company doubtless knows that trend-minded reporters are suckers for this sort of stuff). But John Clelland, global marketing VP at DoubleDown’s parent company, IGT, correctly highlighted one surprising factoid from the index.

“We had this belief that men would make the highest bets,” Clelland said. But, as it turns out, women who play DoubleDown’s games bet 30 percent more, on average.

It’s generally accepted that the social casino games audience skews female, a consensus backed up by the index, which reported most of its audience to be “women between the ages of 45 and 55.” But free-to-play game spending, as a whole, skews heavily male. Earlier this year, a Frank N. Magid Associates study commissioned by payments platform PlaySpan found that men spend nearly three times more than women on virtual goods.

To be clear: That’s spending real money to buy virtual things on social casino games, whereas DoubleDown is talking about betting virtual money. In other words, women are more willing to risk the casino currency they’ve won or bought, whereas men may be more willing to buy packs of that currency in the first place.